Which expression is equivalent to -1/2 (3- 2/5) ?
1 answer:
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Answer:
x < -1 or x > 9
Step-by-step explanation:
Add 3 to both sides.
Simplify.
Divide both sides by 10.
Simplify.
Apply absolute value rule: If then
or
or
Add 4 to both sides.
Simplify.
Add 4 to both sides.
Simplify.
Combine the intervals.
or
Step-by-step explanation:
a)
Two of the three interior angles are known. Both are equal to 55°. This can be seen by looking closely at the picture. To find the third angle subtract the other two from 360°
b)
Do the same thing only afterward subtract the third angle from 180 to find the supplementary angle